keramida e996b3d302 Add support for filtering sockets by protocol type. The default
behavior of sockstat(1) will still be to show "udp", "tcp" and
"divert" protocols, but we can now provide a (comma-separated)
list of protocols, as in:

    % sockstat -P tcp

to list only TCP sockets, or we can filter more than one protocol
by separating the protocol names with a comma:

    % sockstat -P tcp,udp

Protocol names are parsed with getprotobyname(3), so any protocol
whose name is listed in `/etc/protocols' should work fine.

Submitted by:	Josh Carroll <josh.carroll@psualum.com>
Approved by:	des
2006-11-11 22:11:54 +00:00
..